package com.xuecheng.ucenter.service.impl;

import com.alibaba.fastjson.JSON;
import com.xuecheng.ucenter.mapper.XcMenuMapper;
import com.xuecheng.ucenter.mapper.XcUserMapper;
import com.xuecheng.ucenter.model.dto.AuthParamsDto;
import com.xuecheng.ucenter.model.dto.XcUserExt;
import com.xuecheng.ucenter.service.AuthService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

@Component
@Slf4j
public class UserServiceImpl implements UserDetailsService {

    @Autowired
    private XcUserMapper xcUserMapper;

    @Autowired
    ApplicationContext applicationContext;

    private XcMenuMapper xcMenuMapper;

    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {

        // 将传入的json转成AuthParamsDto对象
        AuthParamsDto authParamsDto = null;

        try {
            authParamsDto = JSON.parseObject(s, AuthParamsDto.class);
        } catch (Exception e) {
            throw new RuntimeException("请求验证的参数不符合要求");
        }

        // 认证类型
        String authType = authParamsDto.getAuthType();

        // 根据认证类型从spring容器中取出指定的bean
        String beanName = authType + "_authservice";
        AuthService authService = applicationContext.getBean(beanName, AuthService.class);
        // 调用统一execute方法完毕认证
        XcUserExt xcUserExt = authService.execute(authParamsDto);
        // 封装xcUserExt用户信息为UserDetails
        UserDetails userPrincipal = getUserPrincipal(xcUserExt);

        return userPrincipal;
    }

    /**
     * @param xcUser 用户id，主键
     * @return com.xuecheng.ucenter.model.po.XcUser 用户信息
     * @description 查询用户信息
     * @author Mr.M
     * @date 2022/9/29 12:19
     */
    private UserDetails getUserPrincipal(XcUserExt xcUser) {

        String password = xcUser.getPassword();

        //权限
        String[] authorities = {"test"};

        /*//根据用户id查询用户的权限
        List<XcMenu> xcMenus = xcMenuMapper.selectPermissionByUserId(xcUser.getId());
        if (xcMenus.size() > 0) {
            List<String> permissions = new ArrayList<>();
            xcMenus.forEach(m -> {
                //拿到了用户拥有的权限标识符
                permissions.add(m.getCode());
            });
            //将permissions转成数组
            authorities = permissions.toArray(new String[0]);
        }*/

        // 将用户的信息转json
        xcUser.setPassword(null);
        String userJson = JSON.toJSONString(xcUser);

        UserDetails userDetails = User.withUsername(userJson).password(password).authorities(authorities).build();

        return userDetails;
    }
}
